The Black Russian Terrier is an exceptional working breed. They are calm, brave, loyal, hard working, and stoic. Their innate characteristics include guarding, protecting, and wanting to assist in any way possible. As puppies, they are very curious and will endlessly explore. They are great with families and children, craving human contact and being the very model of the gentle giant, unless called upon to protect. They get along well with other animals and small dogs, but may get into power struggles with other large dogs unless they are both unquestionably subservient to their owner. .